The amount of proceeds owed to the reporting entity by a third party for the sale of trade receivables.

No definition available.

Name:	sxt_ProceedsReceivedByTheCompanyForTheSaleOfTradeReceivablesFromAThirdParty
Namespace Prefix:	sxt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	sxt_SubsequentEventsAdditionalInformationAbstract
Namespace Prefix:	sxt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

+ Details

Name:	us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

Name:	us-gaap_DividendsPayableAmountPerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the dividend to be paid was declared, in YYYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DividendsPayableDateDeclaredDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Oct. 14, 2021	Oct. 01, 2021	Sep. 30, 2021
Subsequent Events [Abstract]
Accounts receivable securitization program commitment amount			$ 65
Subsequent Event [Member]
Subsequent Events [Abstract]
Accounts receivable securitization program commitment amount		$ 30
Dividend declared date	Oct. 14, 2021
Dividend payable (in dollars per share)	$ 0.41
Dividend payable date	Dec. 01, 2021
Subsequent Event [Member] \| Maximum [Member]
Subsequent Events [Abstract]
Accounts receivable securitization program commitment amount		$ 35